As it appears I cannot run SLI with my current mobo setup, how would I go about utilizing two GTX 560's for S&H crunching?

Also is it possible to run two dissimilar GPU's while still retaining normal functionality on a PC? For example running a 560 and a 580 on the same MOBO/PC while still retaining normal functionality in the PC as far as gaming/normal computer usage.
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You don't need SLi to crunch, just run one run as the video card while running the other as a PhysX card (this is how 2 of my 3 pc's are set up).

Cheers.

Could you expand a bit on how to go about just that?

Fit the GPU's, install driver's, (hopefully there is a driver that supports both GPU's)
then make a cc_config.xml (with Notepad) with the following in it (Boinc will only use the most capable GPU by default):

Make sure it is saved as cc_config.xml with ANSI Encoding, now drop the file in your Boinc Data directory (the location is listed in your startup messages),
and Restart Boinc, hopefully Boinc will detect and use both GPU's, if not, you may need to plug a monitor in and extend the desktop, or use a Dummy Plug,

For a while, I had a PC set up to use both the onboard nvidia 8300 and a GTS450 card. It ran just fine for Seti. I finally had to disable the onboard because Milkyway requires double precision. That setup caused errors since there is no way to specify one project to use just a certain GPU, and another to use both.
____________

You don't need SLi to crunch, just run one run as the video card while running the other as a PhysX card (this is how 2 of my 3 pc's are set up).

Cheers.

Could you expand a bit on how to go about just that?

Fit the GPU's, install driver's, (hopefully there is a driver that supports both GPU's)
then make a cc_config.xml (with Notepad) with the following in it (Boinc will only use the most capable GPU by default):

Make sure it is saved as cc_config.xml with ANSI Encoding, now drop the file in your Boinc Data directory (the location is listed in your startup messages),
and Restart Boinc, hopefully Boinc will detect and use both GPU's, if not, you may need to plug a monitor in and extend the desktop, or use a Dummy Plug,

You don't need SLi to crunch, just run one run as the video card while running the other as a PhysX card (this is how 2 of my 3 pc's are set up).

Cheers.

Could you expand a bit on how to go about just that?

Fit the GPU's, install driver's, (hopefully there is a driver that supports both GPU's)
then make a cc_config.xml (with Notepad) with the following in it (Boinc will only use the most capable GPU by default):

Make sure it is saved as cc_config.xml with ANSI Encoding, now drop the file in your Boinc Data directory (the location is listed in your startup messages),
and Restart Boinc, hopefully Boinc will detect and use both GPU's, if not, you may need to plug a monitor in and extend the desktop, or use a Dummy Plug,

Claggy

It would appear that your instructions worked properly. Could someone confirm for me looking at these startup msgs?